I have a 1991 Yamaha 250. I unscrewed the cylinder trim caps expecting to replace the trim dust seals with ease and I cannot get them out. I see there is a ring snap holding the seal in place, but I can't get it out. Any tricks? I was using an ice pick and hammer, pliers, etc. I can't get the seals to move within the cylinder cap either. They almost seem like they are a part of the cylinder trim cap. I'm sure they've probably never been replaced and it's an old engine...any pointers would be greatly appreciated.
