pscook
Platinum Level Site Supporter
That reed block looks like mine. If it's a Boyesen, then you need PSR-21 from a 1996 Yamaha. My thread here shows my reed block and part numbers.
www.gasgasrider.org/forum/showpost.php?p=76462&postcount=14
www.gasgasrider.org/forum/showpost.php?p=76462&postcount=14