factory lifters were Hyd, not solid! If they are solids......pull your spark plugs out, get the rear wheel in the air , put the bike in gear, remove the P.Rod covers, and rotate the rear whell till ya see the lifters go all the way down....now before we go any further, did you have the pushrods out? Check to see if there all the same size! This is important!
If I recall there is 1 pushrod longer then the rest! This one goes to the frt exh only or the very 1st lifter in front ! Then do 1 at a time, lowest point on the cam....tighten the adjuster till you cant spin the pushrod...then back it off till you can just barly spin it! tighten the lock nut....check the pushrod again.....! I like doing my intakes 1st!
Also make sure you have good oil seal gaskets 3 per pushrod....2 small 1 large I have used both cork....and the Blue silicone ones with good results! Make sure the pushrod tube is seated good before install the upper clips! Good Luck!