give this guy a go
sfx wheels
he mainly does mx and road bike wheels
he did my mates crf wheels , they are the dogzzzz
99.00 to do both rims , strip and rebuilt , they are mint
extra 40.00 to have the hubs powdercoated aswell ,,,,,,,
this is him , click the youtube link
i only ever use then little levers with the red plastic handles , no chance of scratching the rim edges either with them
never have much trouble ,,,,,, its more technique than brute strength , tyre changin , lol