My Bite is also very close to yours. I used 5 1/8" pin/pap with a 55 degree MB. I have no weight hole, but I might add one if I think it'll help, haven't thrown mine, just drilled it last night.
Took a fresh white SB pad to it just a light hit to knock off anything left from the factory, didn't change the cover, not that hard, just a good cleaning, more or less.
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az guy aka: R & L Bowlers Pro
rlbowlerspro@cox.net
www.rlbowlerspro.com