Yes it is, that would make sense! I'll have to pull the intake apart at take a look thanks for the info! I suppose after that long that cork material would be fairly hard.

I took the bottom crank case half off my 340 Kioritz to replace the crank seals and I found these shaving/ particals around. They appear to be bronze or brass. Im new to two strokes so Im wondering what these are from and what could be wrong? shim material ? part of a connecting rod bearing? Thanks!...