With an idea from Joo Beng (of AstroBargains), I got myself a set of mini Mechanic Jacks and hooked up a jig as shown. Now I can easily do the leveling without much sweat - even able to fine-tuned the level! I have used it a few times already and the set-up seemed to be working ok.
Just to share and any suggestions for improvements are welcomed.
Recently found a jig from TPI (http://www.tpiastro.com/) and am tempted to get it - but expensive. But so far my DIY, though rough, is serving its function, so I am holding.

