I have used these M and N size connectors on a few mods and they seem to work ok, but sometimes have a problem with the center connector on a true dse901 atty grounding out ( making contact) with the outer ( negative) part of the connector when it is screwed in. In fact I was just putting together a Nicostick and had the connector already glued in, but when I screwed in the atty it came out real hard. I had to pull it off the connector after unscrewing and it, and it left the center post from my atty lodged inside the connector. ( Broke the wires)
Brand new atty too damn it!!
I would be careful when using these as they dont all seem to have the same inside diameter on them. As I said I have used them before with only a few issues.
This Mod is now destined for use with only the 4075 attys that I have as they have a considerably smaller center post.
From now on I will be using a tire valve extender with a brass center pin as I seem to have these down pretty good, and I can drill out the I.D. of the valve extender first if I need the clearance for the attys with a larger center post.
This was done with the N size connector by the way.