Gauley: My reply was in no way intent on being condescending. If it came across that way I do appologize.
I've found the confusing point, it took me awhile to find it.
135.169 mentioned in .399 is only applicable to turbopropeller-powered small aircraft. Since the aircraft you mentioned are non-turbine aircraft, .169 does not apply. But you still have to comply with the T/O and Landing limitations stated in their AFM as directed by the rest of .399.