I’m new to quads and have about average mechanical skills. I bought a 2006 trx250ex that the previous owner ruined the jug/piston/cylinder head, I’ve bought all new OEM parts and want to put it back together myself but am not sure how or if I can swap out the valves and valve components on the old cylinder head to the new? Do I need a specific tool to get them out and back in the new head or should I buy new ones?