OK update,

Glass plate installed, bed prepared and filament sticking well enough.

However seems like there is a hump smack bang in the center of the build plate. if i level on all four corners the put the nozzle in the center it touches the glass. this means i have to back off the four corners that causes its own problems.

so what could it be now? cant be the glass warped also. so now its got me thinking something is bent or loose?

any ideas where to start?

cheers