diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c8c1005..e30f650 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,11 +26,30 @@ jobs:
         python-version: ['3.8', '3.9', '3.10', '3.11']
 
     steps:
-      - name: Cached LFS checkout
-        uses: nschloe/action-cached-lfs-checkout@v1.2.2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-          enableCrossOsArchive: true
+          lfs: false
+
+      # Due to limited LFS bandwidth, it is preferable to download
+      # test files from the last release.
+      #
+      # This does mean that testing new LFS files in the CI is tricky;
+      # care should be taken to also test new files locally first
+      # Tests missing these files in the CI should still fail.
+      - name: Download static files from last release for testing
+        uses: robinraju/release-downloader@v1
+        with:
+          latest: true
+          tarBall: false
+          fileName: "galvani-*.gz"
+          zipBall: false
+          out-file-path: /home/runner/work/last-release
+          extract: true
+
+      - name: Copy test files from static downloaded release
+        run: |
+          cp -r /home/runner/work/last-release/*/tests/testdata tests
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
@@ -50,5 +69,5 @@ jobs:
           tox -vv --notest
 
       - name: Run all tests
-        run: |
+        run: |-
           tox --skip-pkg-install
diff --git a/README.md b/README.md
index 030c717..b28b9b6 100644
--- a/README.md
+++ b/README.md
@@ -47,14 +47,30 @@ The latest galvani releases can be installed from [PyPI](https://pypi.org/projec
 pip install galvani
 ```
 
-The latest development version can be installed with `pip` directly from GitHub:
+The latest development version can be installed with `pip` directly from GitHub (see note about git-lfs below):
 
 ```shell
-pip install git+https://github.com/echemdata/galvani
+GIT_LFS_SKIP_SMUDGE=1 pip install git+https://github.com/echemdata/galvani
 ```
 
 ## Development installation and contributing 
 
+> [!WARNING]
+> 
+> This project uses Git Large File Storage (LFS) to store its test files,
+> however the LFS quota provided by GitHub is frequently exceeded. 
+> This means that anyone cloning the repository with LFS installed will get
+> failures unless they set the `GIT_LFS_SKIP_SMUDGE=1` environment variable when
+> cloning. 
+> The full test data from the last release can always be obtained by
+> downloading the GitHub release archives (tar or zip), at
+> https://github.com/echemdata/galvani/releases/latest
+>
+> If you wish to add test files, please ensure they are as small as possible,
+> and take care that your tests work locally without the need for the LFS files.
+> Ideally, you could commit them to your fork when making a PR, and then they
+> can be converted to LFS files as part of the review.
+
 If you wish to contribute to galvani, please clone the repository and install the testing dependencies:
 
 ```shell
diff --git a/galvani/BioLogic.py b/galvani/BioLogic.py
index e566bc1..4d3300d 100644
--- a/galvani/BioLogic.py
+++ b/galvani/BioLogic.py
@@ -276,7 +276,7 @@ def MPTfileCSV(file_or_path):
     11: ("<I>/mA", "<f8"),
     13: ("(Q-Qo)/mA.h", "<f8"),
     16: ("Analog IN 1/V", "<f4"),
-    17: ("Analog IN 2/V", "<f4"),  # Probably column 18 is Analog IN 3/V, if anyone hits this error in the future
+    17: ("Analog IN 2/V", "<f4"),  # Probably column 18 is Analog IN 3/V, if anyone hits this error in the future  # noqa: E501
     19: ("control/V", "<f4"),
     20: ("control/mA", "<f4"),
     23: ("dQ/mA.h", "<f8"),  # Same as 7?