Alright, so let's start off with this, I'm 20yr's 6' Around 220Ibs+/-, I currently have a 04 CRF250R, I've had to replace my valves twice now first time I didn't know what I was doing took the bike into a shop and just paid to have them replaced, so they just went ahead and replaced them with the titanium valves, not long after that, my bike again wouldn't kick over to start anymore... So I assumed the valves just needed to be shimmed, Took it in.. The shop told me that my valves where so tight they needed to be replaced, so I had them replaced with SS valves hopping this would cure my problem, Had them replaced did 1 Hair Scramble race, (second lap I lost rear break's.) Well since then I've only put maybe a total of 10-20 higher's on the bike since that race, and again bike won't start I've searched all over seeing people say bad valves are just a Honda thing for 04-07 Regular maint oil changes/filter cleaned/oiled, etc everything, what I'm getting at is my valves keep going out, and searching to trade in the bike for either a newer 08 newer CRF250R or a CRF450R I've ridden 450's but I feel like they're just too much of a bike for anything I'll ever need, I do ride hard and hit some 'Big?' jumps, ( https://media.giphy.com/media/Gm4sT46QcSlLW/giphy.gif ) and I have also ridden my buddies 03 CR250, But I just prefer 4strokes, So just looking for other opinion on what they think/would do if you where me Thank's a bunch (First post on a forum ever so hope all goes well, and this is the right place for this) Again thank's a bunch