Hi,Dickl,Thanks for the pics,they are so good I;m going to sit looking at them to see if the sun rubs off????.I would like to throw an idea to you,but need some time to get it together re the cats.It should work?????if the tri mods are anything to go by.Remember me saying about the video of my test bed tri having difficulty tacking?By using a simple ploy it now spins like a topin most conditions.After seeing your third photo showing the whole cat,the idea floated across my mind,it is using forces available when going into the tack.I'm pushed for time right now so I'll come back to the idea soon.Regards Scotty.