Normally yes, the game is fine accepting input from multiple device id, however, 3.9 introduced a bug with multiple ID, leaving some devices not being detected by the game engine.
At present the game wont recognise my custom rudder pedals with any of the sticks I tried. I am sure the bug will be fixed in due course as it has affected a large number of users; so if it does not work atm, don't despair, it should work just fine once they sort it. However, as already pointed out, you can mod the x45 spring to take out some of the tension, either use cable ties or you can do as I did, and actually cut some of the spring out, (don't get over zealous, you do not have to remove much).