HSD Coilovers hitting rear camber arms

[fluent]

Just got new HSD HR Coilovers (yes their awesome, but some minor issues...)

As topic... my new HSD HR Coilovers (Rears) are hitting the rear camber arms (specifically the bottom locking collar).It's started scraping off a bit of the paint off and i see metal shavings...Mate's car is also close (but don't hit)... but mine are 1mm close and sometimes hits!I can hear it hitting/clunking when i'm reversing down/out of my driveway and on some crap roads/corners

I suppose some thiner rear camber arms will sort this out... but anyone else had any exp with this sort of problem?Or will a simple alignment sort it out (really stupid neg camber on rear atm)and no my car has not been in an accident. what are your opinions about this problem?

fyi car is '88 s13 jdm