I tore apart my P200 looking at one problem and found 4 others One of them being both piston rings were glued in to their slots with lots of blow by. The top end has 2 years of use on it and while the crown looks fair, the ring grooves are all gunked up.
Anyone got any recommendations for an overnight soak to help clean out the grooves? The dental pick/screwdrivers aren't doing the best job by themselves.