I had no problems at all in Mex and on down to Panama. Border in Mex is easy at San Yisidro. Military checkpoints Mex, np. More curious than anything. Stay off the Autopistas unless you want to travel fast and spend allot of money, allot!
I got hit up for speeding in Honduras, Nicaragua and C.R. Honduras was funny, it was for smoking while riding. Talked my way out of the Nicaragua ticket and paid $20. in C.R.
Absolutely right about acting or being confident and FRIENDLY. I was in soooooo many places people warned against going. I never felt threatened and I was going to go where I wanted! Hola, Buenos Dia and Buenos Tarde with a smile and possible handshake go along ways.