O.S. MAX-S30 Vintage 2-stroke glow engine

I purchased this vintage model aircraft engine new in the mid to late1970s and it’s sat in the box it came in a clean dry place with occasional oiling ever since. It's never flown and has only run on a test bed on no more than ½ dozen occasions for probably less than 30 minutes total time. It’s in almost mint condition although it is showing a little bit of age grime. There’s no noticeable main shaft bearing side play, it cranks freely and has very strong compression. It has never been disassembled. It’s well overdue for some flight time and I’m now well passed providing it! I’d recommend it be disassembled and cleaned prior to firing up just in case there is some gunk inside. Specifications:- MAX-S30 RC (4.86cc) Bore: 18.8mm Stroke: 17.5mm RPM: 7,000-14,000r.p.m. Output: 0.55ps/12,000r.p.m. Weight: 200g