Hello I ride 4 times a week, 30-40 km per ride. Half on the track and half in trials. I would like to make my yzf 426 more solid. I mean do something to make my engne going longer without maintance. Of course changing oil each 5 rides. My question is what to do with the engine to make it more durable. I was thinking about increasing valve clearance from 0,1-0,15 to 0,12-0,17 and from 0,15-0,20 to 0,17-0,22. And I have no ideas what else I can do. I don't need al HPs. So lowering the compresion can be done. What do you think?