Go to Portland direct, they seem to have the best price.
I was searching earlier in the year and somehow missed it that portland will sell direct.
I ended up buying through a third party who charged 50% more and then didn’t supply the proper units. The end caps came with no gaskets. they eventually sent all the bits but now the customer is complaining they are leaking and I am having to send them all back. I’m sure this would not have happened if I had gone to Portland originally.
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