Hello there. I'm looking at a Bennington Saltwater 23SFBCXP 23' tritoon. My first run at a tritoon type boat and have to restructure my lift from a V hull type to a tube type boat. Question; do I need three bunks to equalize the weight on each tube or just the two outer tubes. Also I'd like the build list for this particular toon and the seller doesn't know much about the specifications. Where can I get a copy, if they publish those. I have an email request in to Bennington but so far no response. thx