Can anyone offer an explaination as to why when servicing my sons 01 426 we found the top half of the white fork spring guide shattered into 100s of pieces the forks were standard in every respect except for the addition of 2 pre-load adjustment washers. Also the plastic pieces are now jamming the top of the damper rod making it impossible to fit a damper rod holder therefore, is it safe to heat the base of the fork leg casting in order to free off the base valve?