My VTA setup is working really well in my E4JS. I did find a bump steer issue and resolved it by using the inner A-arm hole. I found that when the shock was fully compressed, the spring retainer hit the tire and limited steering (locked the front wheel actually). I'm now running 50 wt oil front and rear, pink (1.6mm ?) springs up front laid all the way in and inner shock hole on the A-arm. I'm running light green (1.2mm) springs in back, second last hole to the inside on the shock tower, outer hole on the A-arm. I am still running Associated spring retainers with the bottom lip trimmed down to fit (Thanks Marcos). Its the only way to get the ride height down to 5mm. I'm running SMC 4000 28C cells with no fitting issues. The battery doesn't have room to move. I did install the foam strips that insert into the battery hold down and the battery requires no additional shimming. I've also run the sensor wire through the loop in the belt with the Novak 21.5. My counter weights fit nicely below the center belt for near perfect balance. The only other issue I have is bearing problems in the front drive shaft. The outer gear pulls in carpet fiber and it wraps directly around the shaft and sadly right into the bearing. I've cleaned it and oiled it and its spinning free again, but the fibers actually stopped the bearing from turning during a race and now the shaft is a little scarred from burned carpet fiber. I'm going to work up a little shield to cover that area and use some Goop or Shoe Goo to hold it in place. A stock cover of some sort would be nice as I don't think this problem will go away. I clean all carpet fuzz after every run and and lube the bearings as needed. All this info should work well for anyone running a JS for any rubber tire class.

John