Tonno pro Lo-Roll help

[Calegg11]

Just got my tonno pro lo roll on Wednesday and got it installed. I know these aren't going to be absolutely water tight but im getting a lot of water on the sides coming under the side rails.
I know somebody here has figured something out to remedy this. I removed the foam from factory like the instructions said but im feeling like I shouldn't have. Any tips on trying to make it a bit more water tight.

 

[JCJ4290]

Do you have the RamBox? I don't and my tonneau cover required the foam.

 

[Calegg11]

no ive got the bed caps tho, it said if you have the plastic bed caps to remove the foam filler. didn't really get why just followed instructions. Rarely do follow instructions just did this time for some reason.

 

[blackbetty14]

I just put my pro low roll on 2 months ago and I left the foam on. No water on the sides. The foam is what seaLS the water out or that's what I figured.

 

[Calegg11]

that's what I thought too. I'll have to see if I can get some more or just go buy some.

 

[blackbetty14]

Looks like the same foam that is sold at homedepot. It's like 3/4" grey frost king in a roll. About $5 per roll. Will prob need 1 for each side.