Very experienced very skilled Joomla/VirtueMart specialized coder required

We are encountering numerous problems with our joomla/virtuemart store. We need an experienced Joomla/virtuemart coder to resolve the issues ASAP. Will likely include future work if we like the way you perform. Our current problems seem to center around SH404SEF causing broken links from product categories, we turned it off which fixed category linking issues but resulted in new issues most tragically the removal of the proceed button from the cart checkout which makes little sense but does not allow some customers to complete their checkout. However other customers can as the buttons still there for them. This only started happening yesterday. Our store involves something called Mynxx and RocketTheme templates that have been heavily customized. MooTools is also involved in the cart management and may have a role to play in the current problems, we've had issues with it in the past. We would prefer a coder experienced in these specific components. We will not pay a single dime to you until the problems are 100% resolved we need resolution before the end of the weekend please respond ASAP. Must have Skype. Must have great communication, fast, and must treat our problems like they are your own and stress about them as much as we do!!