Lifter opinions

What oil through pushrods are you using and how did you determine proper length? Adjustable checking pushrod?
They are comp cams moly pushrods. Yes i used an adjustable checker. The engine has been broke in and ran for over 1000 miles. I romped on it every now and again along with several burnouts. I cheaped out on lifters with the Summit brand so....you get what you pay for.