MG/T.EXT knobs unresponsive

[centennialapt]

I've owned an MS20 mini for about two years, have recorded with it, used it live, toured with it, etc. recently noticed while watching some tutorial videos that when patched into the total (specifically this was happening using a sample and hold patch), with my settings exactly the same as the synth in the tutorial, all three of my MG/T.EXT knobs were significantly less responsive than those in the video. specifically in the video he was getting good response at about 5, whereas i could not achieve a similar response while turning up to 10, and in fact get little to no response until about 9 on all three knobs. any reason this might be? i initially thought it might have something to do with the pink noise generator which i was using for the voltage sample, but found similar results when using white noise, triangle mg outpout, etc. this is otherwise a great sounding synth, and just wondering if this is something worth taking it in to get looked at. thanks in advance!

[jxxx]

there couldn't be any harm in getting it looked at.