I have an old hart front rest that I have used and the sinclair f-class feet fit perfectly. I am now using a sinclair front rest while waiting for my seb max to show up. The sinclair feet strangely dont fit the sinclair rest (adjustment screws on sinclair rest are too big in diameter). Before I modify the f-class feet to fit the sinclair, I got to thinking I better make sure the new modification will work on the seb when it gets here. Can anybody rattle off the height adjustment screw diameter and thread count on the sebs? Thanks.