Hey guys
I saw on here that someone had a problem getting steering blocks for his HPI F1. I had the same problem too and I found, with very little work, that associated steering blocks and axles would work. Part # 8443 for the axles and part # 8441 for the blocks. First pull of your old block, then install a thin 1/8” washer and a 1/8” o ring as a spacer. Next, install the associated block and axle with the thick side up and reassemble as before. Works great. BTW I did not use the setscrews.