Some cores just don't match up for certain styles.
I knew a Track Staffer.
He didn't seem to really jell with the the new high tech core in the Freak, Freak out, Phenom, Mutant, etc. but he jelled really well with the Heat, HEat 2, EZ money, all the symmetrical cores.
Maybe the Fuels don't rev up quick enough for Tommy D.
I know at Brunswick every time I used the core in the Impact Zone, Pro Zone Violet, and Battle Zone bullet line(same core). If I used the
Command Zone Arc core it was hit or miss.
REgards,
Luckylefty