wastegate spring differences?

[L18M]

Just bee reading up on wastegates and i think i need to dismantle my external wastegate as its not closing properly.
could either be loose nut inside or broken spring or worst damaged diaphragm.

i see there are lots of different pressure springs but are say the 40mm springs a different diameter to the 50mm springs? given they are both .8 bar

or can say a large red spring fit anything from 38mm wastegate to 60mm wastegate?

0.25 Bar - 3.63 psi - Small Yellow
0.4 Bar - 5.80 psi - Small Red
0.5 Bar - 7.25 psi - Small Green
0.6 Bar - 8.70 psi - Small Blue
0.7 Bar - 10.15 psi - Large Yellow
0.8 Bar - 11.60 psi - Large Red
0.9 Bar - 13.05 psi - Large Green
1.0 Bar - 14.50 psi - Large Blue