I've recently (despite intending to for years) bought a HoBao HyperST with the Macstar .28.
It had been messed about with before so starting it was far from fun, not to mention the starter box kept starting the engine the wrong way so it wanted to go backwards.

A few blips on the throttle(while on the box) and it changes it's mind, puzzles the hell out of me?

Anyways, this has been over a week of trying various HSN/LSN & FSN (the one you're not meant to touch, EVER), and tonight i finally got it running, just.
Its clearly overly rich and is spitting oil somewhere around the head (to be looked into tomorrow).

KEEP your lipo's, I'm for sure not looking back....... This Nitro thing is way too much fun, takes a skill set I'm still learning too. Electric you can just plug and play.

ETA : Just noticed this was 1st time ever, About 15 years ago i got a single engine from my dad, minus the plane. It was an OS MAX .40 which i held while a mate used a starter wheel on the prop. glad it only ran for 2-3 seconds or i'd be missing digits.