Try some R1Wurk batteries.

As for the guy with the push problem due to picking up gunk, shore rating doesn't always cut it. You may need to try a different brand of tire. Some companies have the same shore rating but also have different type of foam or rubber content. You need to find one that won't pick up the trash like BSR Black fronts. Maybe Blue/Blue. Don't try Team Purples because once you go outside the groove, you are done.