OK, that's what I needed to see, it's a standard external coil
Here's the thing ... lots of those coils from the 90s had a defect from Stihl, the epoxy sealer was defective and cracked.
A coil can work, test as good, and still fail when it gets hot, that's the typical symptom of these coils when they go bad.
Your problem is that you're going from points to a universal module, the firing point is very important on this, and I don't know how these new modules work, but you need to investigate that possibility.
Of course check wiring for ground faults and all that.
The thing with the coil is, you need to establish if it will work at all quickly and if it is bad, you need to send the seller a message through ebay asking for a refund immediately, if no response, file a claim and you'll get your money back, but you have to send the coil back.
My advice is to first find out about the compatibility of this module ... that could be your whole problem.
Second test the coil if possible ... should be able to do that without the module and manually.
Third, don't buy used coils generally unless you know the coil, I'd look for a new one and pay the extra money.
You may also find that points are not a bad thing ... the 041 was relatively good with points, the problematic ones were saws like the 030 series where the bar oil fill was on the side, inevitably oil spills and gets under the cover into the points.
Keep me apprised ... and maybe there's someone here who can give you better advice on the module than me.
Try contacting the module seller and ask if point of fire is an issue with the modules.