This was my first kit from engineDIY, I have purchased this one because I wanted a Hit & Miss engine model that function like the real thing, and also have scale looks to it and not the same square form that other engine models have.
I decided on the KIT, so that I can enjoy the building experience, and also learn how everything is put together and how it works, as an introduction into the hobby.
The kit was shipped quickly, and very well packed, everything arrived in one piece.
As for the kit it self and the parts, the machined parts are impeccable (only paint issues, but not many), all parts fit together very good, including the fine parts which need very low tolerances fit nicely and my fears of having a delicate part not fit went away quickly. most painted parts were very nicely painted with a few very small occational scuffs
What I would suggest - build the kit when you have time and are stress-free, take your time, don't rush (especially with fine threads), and pay attention to the conical brass sleeves of the fly wheels - do not tighten them until the fly wheels are set in their final position as once those are tighten you can not remove those without damage to the parts. also follow the instruction booklet don't skip steps or mix them up, I took the exact steps from the manual (what some you YT do not do) and found it was a smooth ride, as almost everything is very thought out.
I have finished the engine it self, I still have the ignition kit to assemble, but that will be no problem.
My overall experience is pure joy.
My only critic, is that the instructions do not contain the warning in regarding to the fly wheel conical brass inserts, to make sure people avoid tightening them immaturely and having massive issues (thankfully I have seen the warning in a YT video) also could be nice if the first page in the instruction would clearly list the tools and oils required for the assembly, another small critic is on the "old version" crankshaft there are four edges that are sharp and should have been beveled out to avoid people cutting them self while assembling it.
Overall impressed, great value, I am a pretty critical person and I am telling you, this kit is worth it.