Correct

I know Lutz does, and I'm pretty sure Bornhorst is as well.

I understood it like you. But I guess you will need some reaming just to be sure that the hingepin slides freely
This mod is supposed to catch less dirt

yeah the arm mod is pretty much standard now across all of the vehicles. Allows the cars to have a more forgiving and plush landing. I suggest after each weekend you pop the arms off and just run a reamer through to clean out any dirt.

One of the side benefits is that if you do get a slight hingepin bend, your arm won't bind up. Obviously you'll want to replace that hingepin, but you'll finish your race without the arm locked into one spot.

Is it being done on just the buggies or on truggies and sct too?

All of the above.

Picking one of these up soon, what do you recommend getting with it? My #1 choice was Tekin rx8gen2 1900kv, what are some other solid choices?? Also what servo? I currently run SCT, so not sure what I need for a real 1/8th...

Personally, I still prefer reaming the arm vs cut, but that's just me.

Sounds like a 4S lipo in the 6500mah range balances the car well.

For electronics the main thing to me at least would be if you find you want matching electronics in the ET48, keep in mind the space you need when running a truggy sized motor. if sticking with the eb48, a variety of electronics will do the job. I run a different car but the Castle MM-x I have been enjoying with the SMC 1900kv motor.

For servo, the hitec lineup works well as it has a very long servo lead so you don't need an extension.

Thanks, I'll definitely check those out. I was wondering why I saw a lot of 6500's in setups... Now that makes sense. That combo is way more affordable! I currently have a rx8gen2 and Tekin 4300 in my sct, so not looking to spending a ton atm if not needed.. lol

you could see about buying the ESC to keep things the same and go with say the SMC motor to save some money.

Iv came across it once but can't seem to find it again, can someone point me to the rite page number for info on raising the rear diff mod.

Hey Bob, why is this? CST is supposed to be an industry standard measure. It seems PTRC should remove their CST ratings if they really aren't using that scale, or perhaps adjust their ratings so that it aligns with their actual CST viscosity.

I'm leaning towards their values are correct and the others aren't. PTRC oils are the same as Mugen, Core, and most of the oils you see from the EU manufacturers. The only ones that appear to not follow the same standard are AE and TLR.

either way, we use the PTRC oils because that's what the rest of the team uses. It just makes it easier. I will say that my PT oils stay cleaner much longer.