Distributor Recurving?

I took my dizzy in to my engine builder and told him I want to get up to 20 at idle and 14 mechanical,total 34 no vacuum advance. He had to weld up the slots.Also I bought the Mr Gasket springs for a faster advance,my 360 screamsssssssssssssss,no pinging nothing.So yes there are big advantages to this mod.

...Heh... I cheated. One of the guys on here sold me a "stock look alike" Accel which has ADJUSTABLE mechanical weights, actually an adaptation of the old Mallory Y? series. So it takes all factory parts, pickup, reluctor, but has adjustable mechanical with no welding.

For the life of me, I cannot remember who I bought it from, Rumble or Adam, one, I think