I did not change the fibre gear in the motor. did not know one has to change them. I will rather then develop a reduction system for a little 1Hp single phase I have sitting on the shelf.
I will prioritise the advice.
1) Stronger power supply,
2) Box or remake the legs of the frame. What will be the strongest....2 30 x 30 x 5 angles welded up to form a 30 x 30 box or a piece of solid 30 x 30?
3) I like the over centre tensioner. Would like to see some examples.
4) Design that lifting cam on the backwards stroke. I must say I have watched numerous videos and have never seen it on a DIY saw, but I am in for a challenge.
I think I did thank everybody for their input. That is why my heading was "HELP" and not just "Here is my Saw"