I had someone professional on electronic connections, see what's causing the audio jack to not go in all the way, do you have any idea what's probably causing it?
As in..it's too long?..or doesn't make a positive fit.
I don't know which female jack you are using..there aren't too many out there and I see the nut type matches some I have (I have other closed frame but for pcb mounting) , but here's the ones I have and some male comparisons and different shoulders (for recessed pcb mnt etc, and they are positive fit..you have to work at pulling apart..they all measure at .137 diameter (3.5mm = 0.137795) however the molded one shown is .006 shorter..the distance between tip/ring is also shorter and doesn't line up as well with the female jacks tip/ring requires little effort to plug in and out..so not as positive fit as the others..
Since everything (for the most part) is being made in China these days I found if you have to buy from China (or a US seller that buys from China) , purchase all the components with the same company so you have a better chance they are matched.
I have to purchase aircraft fittings (No US companies make them anymore) as I use a lot of them (GX Series) for custom cables/wiring so I purchase in bulk.
One company drills out the solder cups..one does not.They both use different thread pitches,pins are .005-.010 in difference in length diameter and a couple other differences..The fitting with the larger pins would fit into the female of the other manufacture very tight,the fitting with the smaller pins would fit into the other female designed for the larger pins but would not make a positive fit/connection so the result was intermittent(cable/wire movement) or no connection,this design is threaded connection so the only way to figure it out was a multimeter...
after you did all the assemblies/soldering
Side by side you can't tell them apart.. but the components are not interchangeable and have the same part numbers when purchasing from different vendors..or on Amazon ,ebay etc.This kind of cr*p can be very annoying/frustrating.
I have done some Trigger assemblies including the drop in basket type for friends/Live musicians that needed dependable (peace of mind) ones guaranteed not to vibrate apart from being hit and constant vibration.It's annoying/disaster if you had to remove a head/re-tune etc because a cable came loose during a show or transport.
Personally I would adjust the print to allow for a GX Series ..overall the same footprint as the 3.5mm TRS setup...the hole size is larger .450.. compared to around .240-.250 but the difference in quality and reliability is 100x's..at least..
I added a comparison image for the GX Series and TRS.
EDIT:Added Pics