Skateboard question...wheelbite?

so i bought these new thunder jamie thomas trucks and i got some sick wheelbite from them. (my old trucks were destructos) ...i bought some 1/8" risers and it helps sort of. i still get wheel bite when i land and a little when i turn alot though..idk what the problem is.maybe the bushings ..please help
Update: or should i get siffer bushings and smaller wheels? ( currently i have bones 52 or 53 mm wheels one of those 2 i forgot
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