I recently bought a Ambush Lite from here and I am getting a good bit of hip pressure. Is this common with this saddle or did I get a size too small? I tried my brother's Mantis and it much more comfortable but it tried to come loose climbing up with weight on the saddle from carrying platform attached to saddle. Is the hip pinch caused by the attachment of bridge to the top of saddle instead of to the loops that bridge is attached to on Mantis? Input would be appreciated.