I recently purchased a black food grade pickle barrel and converted it to an upflow filter. Everything seems to be working as planned except my barrel is building too much pressure and leaking around the lid. The lid is in two separate pieces as shown in the photo. The inner plastic lid with rubber gasket sits inside the barrel opening while the outer ring of the lid screws it down and holds everything snug. Currently my inlet is a 1” hose running from my pump to the barrel where it ends up in 2” conduit male and female ends. My outlet is the same setup. 2” male and female conduit at the barrel and a 1” hose that runs to my waterfall. If I make my outlet larger and go with a 2” hose to my falls will it help the water exit fast enough to avoid leaks? Also does anyone know where I can find a replacement gasket for these barrels? Has anyone found anything that works better than the standard gasket? Thanks in advance!