last year i used the c switch at LH.... i had 2 sets. one stock with extra foam to help "round" the carcus.
and the other set, i belt sanded off the pins but left the cener.
when LH was a little dry i used the stock ones, and nice and damp i used the demeled ones.
i dont have any experience on the proline ones.
for newbs track:
all i have run there this year is advantage tires, (sponsor) but before that i tried switches now and then, but always like the panter K2 soft at newbs. the only time i found switches to work good is on a DUST FREE surface like LH or maybe at newbs when dampish.
and the other set, i belt sanded off the pins but left the cener.
when LH was a little dry i used the stock ones, and nice and damp i used the demeled ones.
i dont have any experience on the proline ones.
for newbs track:
all i have run there this year is advantage tires, (sponsor) but before that i tried switches now and then, but always like the panter K2 soft at newbs. the only time i found switches to work good is on a DUST FREE surface like LH or maybe at newbs when dampish.