Airbox to carb boot replacement

[Al Bundy]

I was changing oil and filter today and noticed one of the rubber boots from the airbox to the carb was ripped. I'll replace all 4. I figured you squeeze the old boots to get them out of the airbox and do the same to fit the new ones in?? What do I use to clean the adhesive/silicone off the airbox, and what exactly is it, adhesive or silicone sealing boots to airbox?
Also, I dumped about 3 to 4 table spoons of water out of the crankcase breather. Is this normal?
Thanks, Al

 

[Al Bundy]

After doing much searching and reading it seems some don't put any sealant on the boots and others have used silicone or rtv sealant.