Ok guys so heres my problem. I was finishing up a set of fleets the other day and I lost pressure with my downstreaming nozzle. I walk over to the trailer to see what was going on, pulled the trigger and I the gauge was showing 4000 psi with a 2540 and the adjuster on my unloader was popping upping and down and shaking everything. Put a high pressure tip on and it was making around 3000 psi but was pulsing like crazy. Put the soap tip back on and it ended up shooting the top off of the gauge. I kicks into bypass just fine, but its only when its building pressure. Any clue what could be going on here?