Thanks for the suggestion Mike i have a set of hammers and dollys for panel beating but the thickness of the panel is making it hard to make any progress .
David the first few valve`s were a pain in the butt but after awhile i worked it out and with a bit of persuasion [the hammer] they came out .
I started by removing the bottom retaining clip first then pushed all the valves right up the i used a long thin punch and a brass hammer to knock the guides down a bit so i could remove the crows foot clip at the top then used my home made valve removal tool too push the spring ,valve,guides out as one unit .