I started on the new traversing back stop (not to be confused with the Northern Ireland Backstop, mine will better than that !!)

The swinging bar at the rear is there to hold the two rear wheels. It swings so it can compensate for any unevenness in the floor rails so the whole backstop can't rock on only three wheels. It has a lump in the middle so the pulley can slip under it due to my range tube only having 200mm extra over the 10m. I need to 'eek' out every bit of length, this solution will do it.

More pics to come and it will all become clear as it gets closer to finished.

https://ibb.co/Cntx4Nj
https://ibb.co/cCc7mML
https://ibb.co/56mxcC5