I have developed a couple of small cracks in my XR400R(04) plastic tank just above where your knee would touch the tank when seated. The cracks are not on the welds. The tank does not leak yet, and the cracks seem to grow over time. I dont remember dropping the bike and damaging the tank. Is this a regular problem, I was told that Yamaha had some problems with their tanks and as such replaced them at no charge. Has anyone had similar problems?
Also will a professional plastic weld job fix the cracks and will it last?
Any advice or suggestions would be greatly appreciated.