I am a right hand, 15.5 MPH, down and in bowler ( old school ), who started bowling again after 30 years absence ( i am 50 ), still trying to " catch up "
with all this new ball techno. Looking to finish building my arsenal.

I currently have an EBONITE NVS, HAMMER RAW PSYCHO, ELITE GOLD LABEL and
EBONITE MAXIM ( spares ).

What ould be a good heavy oil ball?? I am a tweener with med revs, not much hand who typically rolls 10-5, 12-7, like i said OLD SCHOOL and proud
of it, LOL. Thanks in advance for your help guys.