I tried adding some copper braid (copper solder wick) and it didn’t make any difference. Then I tried replacing the spring with a Phosphor Bronze Spring from Convoy I happened to have, again no difference.
I took readings of all three modes and they all seem a bit low across the board compared to Foys XinTD SC-82 v4 review.
| Burggraben | Foy | |
| Low | 0.036 | 0.04 |
| Mid | 0.611 | 0.71 |
| High | 2.664 | 2.91 |
Since even the modes which require less ampere are lower it makes my layman brain think that there is no bottleneck anywhere. If a thin/damaged cable would limit the high mode amp then the mid and low should still match Foys values. They are all lower though, which a bad 7135 chip could explain. Thoughts?