Guess what it is.

[MarkJ]

Been away from the build a few days but got back to it yesterday. Putting epoxy putty on the sides of the left front tire.

[MarkJ]

Some more work on the left front tire. This time I drilled holes where the epoxy putty goes so it pushes through the holes and makes the putty stick better to the tire. really speeds up the process.

[MarkJ]

Started working on the right front tire.