Well good oil not cheap anymore same with filters so yeah thats what I would do. It might be better to do it sooner but maybe not, its you call. Hey you ask us all what cam to get and I think not one member said to use the cam you did land up using, ssooo why ask us? I want to know how much vacuum you have at like 750 rpms and how it runs. I was thinking of use Comps 270 soild cam this spring but maybe that cam you went with would be better. Now I can't decide-Thanks