Can't help with mountune's unhelpfulness, but if you to a engine builder, he can soon put some gauges on them to determine lift and duration, will charge of course but won't take and hour even, or buy a degree disc and dial gauge and DIY, it's not hard, especially if you can beg/borrow/steal a lathe, can be done without buty a lot harder, as has to be held dead steady.
tabetha