Roberts_Clif - Thanks for the reply.

My version of Cura does not have speed settings for Supports. Thanks for the link.

I have wasted a lot of time with the printer over the years but hopefully getting there now. Firstly I did not know to install my printer profile and never getting the Support to print right has been a problem. But recently putting on lock nuts on the bed has made a big improvement to getting the first layer right. The wing nuts that came with the machine were useless and moved all the time. etc etc

I should be right now after I work out how to get the first layer of PETG to stick properly. Guess it must be getting the bed perfect.