My 10 year old Grizzly 20" G0454 is hurting lately. Something happened in the cutterhead/pulley connection that has everything twisted and mangled. The key slot in the cutterhead and pulley is mangled and beyond repair. It means buying and installing a new cutterhead, pulley, key and retaining bolt/washer. I don't want to get another 4 knife cutterhead for it, I would rather upgrade to the Byrd Shelix if I do the repair. With all the other associated parts and new bearings, it would cost well over $1,000.00 (even though Grizzly has the Byrd heads for 875.00 now. I also was at Woodcraft recently and saw that they have Powermatic tools on sale in July for 10% off which got me thinking...........is it worth it to invest $1,000 into a 10 year old Grizzly or bite the bullet and get the better Powermatic with the Byrd head already installed? I know the Grizzly I currently have is 20" wide and the Powermatic is 15", and I am willing to downgrade the size for the better quality of the Powermatic with the Byrd head. When I bought the 20" Grizzly 10 years ago I thought I would need the 20" width and found that over the 10 years of use I never did need it at all, so the 15" Powermatic would be sufficient for me. Thoughts?