I strongly recommend reaming the arms as stated in the manual. Maybe it isn't as bad on truggy since it has more leverage on the arms to wear in. However when I build my EB I didn't ream them and they never wore in. My car handled horribly until I found this problem and reamed them.

The hinge pins won't rotate freely in the pills, especially if running a lot of toe or sweep. If you don't ream the arms so it can rotate freely there will be a lot of resistance in suspension travel. That's the last place you want it.

Search eBay for 4mm reamer and snag one or use a drill. I don't recommend the Integy one. Their metal is too soft and has trouble shaving Tekno arms.