vertex manipulaition

Right then. I'm making a TF2-detailed zeppelin map (probably for SFM or gmod use) and I'm using the large airship from the Frontline Asset pack as a reference for the hull shape. I'm giving it a full interior with as much detail as possible, so just using the model isn't an option. I need to...

so the problem is i created a boat with vertex manipulation but the front blocks corners move 1to20 HU over and over into the same spots? i tried turning them into entities/func_detail but it still occurs is there s1 knowing the issue and having a solution or should i just recreate the front...