Sprinter brakes, push hard to stop

I have an 08 Sprinter 3500 (Pleasureway Plateau motorhome) Havent driven it in a couple weeks, drove it today and you have to really stand on brake pedal to get it to stop. Fluid looks ok. Any ideas, thanks

Is the power low too? If yes, there may be some info here.

https://sprinter-source.com/forums/showthread.php?p=61212#post61212

vic

Vacuum pipe adrift!
On a 3500 its a plastic teed pipe just before the servo. Trace the tee off Tee piece pipe down to the front!
Bet you find the pipe adrift behind the headlamp.
Dennis