I'll jump in here... I installed SS exhaust springs from Spruce 100 hours ago. They were loose during the install so I re-bent the welded attachment bales to stretch the springs and add preload. Added benefit is springs are now spaced further away from exhaust tubing. I used high-temp RTV to pack the inside of each spring. Good fix...
PPL/ASEL 1970 - Sport Pilot since 2004
80 hrs Flying Aeronca Chief 11AC
1130 hrs Flying 46 Piper J-3 Cub
RV-12 E-LSA #120058 AWC Jul 2012 - Bought Flying Oct 2015 with 48TT - Hobbs now 402
LSRM-A Certificate 2016
Special Thanks to EJ Trucks