I purchased the waterblock for my 2080TI Kingpin card which I had been waiting on for almost a year!  It began leaking within the first hour (all over my $750 mobo). I took the block apart and noticed a manufacturing defect where the oled/ports connect to the main block.  The plexi was sunk in past the copper so the o-rings couldn't even do their job because the plexi wasn't flush.  I knew that they wouldn't have anymore of these blocks available so I just threw some clear bathroom caulking around the ports and put the oled/port component back on the block - needless to say it didn't help.  I decided to RMA the block and guess what?.... big shocker, they denied my RMA. I went back and forth - escalating the ticket and they kept denying me.  There is no warranty void if removed warnings on the block, caulking is NOT AN ADHESIVE as listed in the warrany (some will have their own opinions here). Regardless, the block is totally defective.
 
I spent $350 + tax on the block and another $80 to ship it back for RMA (insurance which I believe is required).  It blows my mind that a company could do this to it's customers. In addition, I can't believe they allow customers to take apart their cards costing upwards of 1800 but applying a little bit of caulking voids the warranty. I never modified the block, and then they told me the holes for the screws are stripped in the block where the oled/port component connects. It wasn't stripped when I had the block!  What's funny is I ordered shirts from EVGA a week prior, and they screwed that order up and had to ship another. I was about to advertise for EVGA, but I think I'll just toss them in the firepit.  I used to love EVGA but the management overseeing customer service is horrible and should be replaced.  The customer is always right especially when they are shipped defective hardware. What a joke.  Now I am out over $500 for a garbage paperweight.  It's time to find someone else to purchase from. I spent thousands of dollars at EVGA, and I will be putting that elsewhere moving forward.  I'm sure EVGA doesn't care or they would have helped out given the manufacturing defects regardless of whether or not there was a little bit of caulking on the o-rings.  The stripped screw holes just reinforces the fact that the quality of these blocks aren't on par.  Booooooo EVGA!  You lost a customer!

US

Sajin
Shouldn’t have tried to fix it yourself by throwing some sealant on it.

That was helpful. 

You are correct, bathroom caulking is not an adhesive, it can be removed without causing ANY damage. 
 
 
 
 
 

With shipping, it might not be worth your time and effort, but I do have to wonder:
If you ask for EVGA to return it to you (with shipping at your expense), if you remove and caulk, and then send it back to them for RMA, would they accept the warranty claim, or is a RMA rejection permanent and not dependent on the current condition of the product?