Is my backspacing a problem

[slugish]

Have 8 in tt2's on front with 5.5 b.s.'ing & on sharp turns they have always scrubbed my lca. I think an extra inch offset might solve the problem . In other words , would 4.5 in bs'ing probably stop the scrubbing . I know it would be a lot cheaper to grind down the lca's , but Im a little afraid to do that . Any experience or opinions of this would be appreciated.