Just recieved NOS cylinder kit. It appears to be a low compression (red dot) with fiat top piston. The original is a high compression cylinder (white dot) with dome top piston. Any known issues using this replacement NOS cylinder? I also have a NOS Gulp Matic crank, can I use it, since case already cracked open? Reference a prior post,(5-27-2019 by Yugi Trall), it appears the Gulp One Speed crank and VIP practically identical, except for length of a few mm on one side of shaft. Do the Gulp Matic and the Gulp ONE Speed use the same crank? If not any suggestions on who would have a replacement piston roller bearing for VIP crank.