Checking lobe lift

Just got a new dial indicator and I'd like to use it to check lobe lift on my cam. I'm not so much concerned about finding the actual lift on each lobe as I am about making sure that they are all consistent and that none of them are excessively worn. The trouble is that I'm running hydraulic lifters and I really would like to avoid pulling the intake manifold if at all possible.

My concern is that differences in the amount of oil in each lifter will cause my measurements to show different amounts of lift on each lobe. Obviously taking my measurements with a solid lifter would be ideal, but again, I really don't want to have to change out my intake manifold gaskets right now.

So I was thinking that if I measure the lift after bleeding down all of the lifters I could get an accurate enough reading to make sure that none are overly worn. To do this I was thinking that I could turn the engine over with a breaker bar a few times with all of the valve gear installed. Valve spring pressure should bleed the oil out of the lifter when oil pressure is at zero, right? What do you think, will this allow me to measure each lobe for consistency??

Thanks fabo