[sigsauer]

I have a couple of questions*
After I put the red top on the stove (electric) how long ballpark until its finished...I read 45 seconds but I interpreted that to mean 45 seconds after boiling starts...is this correct?
If there are seals or gaskets on the red top?
how often should I replace them?
Do you use a tamper and how do you get the dome shaped pattern uniform?
Thank you