Since I just traded up wheels with Ric and gave him my trd ivan stewarts, im back at the stock wheels and the a arm control issue.
The thing is, if you have long ome shocks like I do and your upper arms touch the coil when fully dropped a 1/4 spacer is still going to have the side lugs hitting the arm even at full droop. Did some minor shaving and they barely touch but it still happens. Mud terrains will give this issue more problems then lets say a nitto or bfg all terrain as their side lugs are a bit smaller and dont stick out such as bfg, firestone, and gy mtrs do.
if you have stock wheels I would definitely not suggest a 1/2 inch spacer as it will give you hardly any thread on the lugs to work with. Either some 1 inch wheel adapters, minorly shaved arms and 1/4 spacer, or full shaved arms from Steve or Ric with no spacer to help out with this issue.
Brian (wabfab) also has some 1 inch and up wheel adapters which will end up being my plan to eleviate this annoying vibration I have with these 1/4 spacers I have.
I hope the mods think that this info is of somewhat help to some. if not then feel free to delete it.
Thought I could help
Blake (neliconcept