[Bazzer]

For tyres go to RS Slot Racing. LINK

As far as I can remember the front steering wobbled from new and I have never owned any that didn't, most people who do them up use a solid front axle. Best of luck getting them to perform well, they were rubbish entry level cars back in the day and they are still rubbish although some people think they are cute.

Juniors were a poor car by modern standards but so was a Ford Cortina Mk2 (or any other heap of 1960's tin) however the Juniors provided great fun if raced against one another.

I have just thrown my Junior BRM on a simple track that I have laid and I still think they are good fun cars.

To answer the OP question about the front wheel wobble, as stated else where they were always pretty loose and most of the slack on my Juniors is actually between the axle and the wheel, I would think a fix is quite possible on this.