Riders, I am a new rider looking at buying a 2006 CRF250X with a 270cc big bore kit. I have been told that the CRF250x would be a good bike for me because it traditionally has low maintenance requirements. However, I am concerned that having modifications may make the bike more prone to having problems. The dealer told me that the big bore kit wont make any additional problems because they dont actually bore it out, they use a completely new kit rather than thinning out the walls. Any thoughts on this...............thanks in advance for your time.