SKIP,
Have you modified the surfaces of the LevRG and the AF at all?
Both are for heavier oils. The LevRG is a major oil,while the AF says it's for "flip", the cover is a Brunswick Activator cousin and, as such, in its stock form, can require a good deal of oil. It is entirely opossible that you were not using them on enough oil.
I had to sand my LevRG to 4000 grit, from its stock 1000 grit, to get it to work initially. Even then it was early, for my league. On fresh oil, just after they oiled the lanes in the afternoon, though, I need more surface, closer to 2000 grit.
The 'Nsane is closer to a normal resin pearl in friction; so your normal leagues or practice lanes may have plenty of oil together with thatvery flippy drilling, in order to get a good reaction from the it. Comparatively, the LevRG needs a LOT more oil, while the AF needs more oil.
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