Hi. I have read many reliability issues with Heng Long tanks, however, I am handy ith a soldering iron and screwdriver so I'm not affraid to rip it apart if I need to. Can anyone tell/give me advice what to after taking the tank out of the box? ( any checks, any immediate mods?), also what are the first things to change or modify mechanically as I would like to add 'metal running gear' but are there any issues/do's and don'ts?

thanks