I just bought my first Honda. It is a 04 rancher 350 4x4 and it smokes. Alot. It still has great power though. I assume it needs rings and new piston. I talked to a repair shop today and they told me that just rebuilding the top end in these ranchers won't work, that it needs completely rebuilt ($1600-$1800). I took off the air filter and there was no dirt or mud inside. Was this guy right, or will a traditional top end rebuild work? I just want to hear from someone that personally experienced this. Thanks in advance!!