[AdeC]

Most of the various repairs have been carried out ahead of running of the Viking round, with the exception of Makem's Wolf Dallara.  Upon closer investigation it would appear that at somewhere along the line superglue has got into the bushing and axle spacer and bonded both to the axle.  

   

I can attempt to remove the rear axle and try to free the bushing; but I'd rather not try this without prior consent due to the risk of causing damage to the axle/bushing and/or chassis (as the other bushing is bonded in place to the 3d print chassis). 

Makem's Viper had a small protrusion from the interior tray which I think was causing the tyre wear.  This had been removed:

   

The edge of the black electrical tape that secured the interior in Harrisons Supra was hanging down which is assumed to be what caused the groove in the tyre.  This tape has been replaced with fresh tape and smoothed to the body