Front shifting

11 speed Ultegra mech and shifters, not sure what series but the front mech does not have a screw to adjust cable tension.
Cable is routed to the left (as you look from behind) of a little pin on the mech and the right of the securing bolt.
Rings are Praxis 50:34 and cranks 3D Rotor sold as compatible with 11 spd Ultegra with a power2max power meter.
Problem is a reluctance to shift up to the big ring. It's as if the cable has to be so tight and move the mech so far it is then impossible to eliminate cable rub in several sprockets.
It's annoying me, I can ride the bike but the shifting is worse than on my Tiagra knockabout bike. I've tried moving the mech up and down, it's braze on but tried angling it.
Is there something I'm missing, is this typical of moving away from shimano rings, is there another series of Ultegra and this would work great with that one but not mine?
Cable is routed to the left (as you look from behind) of a little pin on the mech and the right of the securing bolt.
Rings are Praxis 50:34 and cranks 3D Rotor sold as compatible with 11 spd Ultegra with a power2max power meter.
Problem is a reluctance to shift up to the big ring. It's as if the cable has to be so tight and move the mech so far it is then impossible to eliminate cable rub in several sprockets.
It's annoying me, I can ride the bike but the shifting is worse than on my Tiagra knockabout bike. I've tried moving the mech up and down, it's braze on but tried angling it.
Is there something I'm missing, is this typical of moving away from shimano rings, is there another series of Ultegra and this would work great with that one but not mine?
[Castle Donington Ladies FC - going up in '22]
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Also when cable disconnected set your low limit so the chain only just clears the mech cage when in the small (front) and largest (back) ring/sprocket. For shifting, there should be just enough cable tension to take out any slack when in the little ring if the rest of the setup is good. If you don't have cable stops for a barrel adjuster you might want to fit an in-line one to help get the tension right.
https://www.youtube.com/watch?v=-5jnNScKhRs
I think maybe I've been used to Chorus which allows for greater triming of the mech which helps eliminate chain rub - anyway having set the low limit screw a bit closer to the chain as advised and it is not too bad now.
http://si.shimano.com/pdfs/dm/DM-RAFD001-02-ENG.pdf
I’d start from the beginning and you should end
Up with a free moving mech with loads of trim. The Ultegra kit does seem sensitive to cables. I bought a da gear and brake cable kit that was expensive but has made a world of difference.
Got a new skid plate and put it in, then followed the "install" instructions for the derailleur and it was back to shifting fine again. So worth a try.
This is what I'm talking about:
https://www.sjscycles.co.uk/gear-spares ... y5p116000/