[Devils Advocate mode=ON]
If you take a car for a remap to a company, and one which you assembled or had assembled ( as opposed the tuner you took it to for mapping) then if there are hardware issues, which effect mapping, the mapper are not of their cause... and its s choice of someone having to rectify them.. mapping wise its incomplete at that point, or at least unfulfilled in terms of a lower than hoped power figure. (like yours)
They would no doubt have spent time trying to map it.. time which is going to be required to be paid for..
Its going to be a balance of fixed price remap vs something which is not of their build and in many respects "unknown". Only in the act of mapping will issues become apparent.
I know I get this a lot... and its often frustrating as hell.
A hybrid map would not take a week.. Emulator is quicker than flashing & logging.. think about it 5 days labour for remap money? It aint a weeks work.. duration perhaps, dropping on and off the job... but not a weeks work
If there are problems, then they would of course need to be firstly identified and then fixed.. Someone will have to do this and it will take an amount of time, depending on whats up with it.
I try and build in as much time as possible to allow for issues, which of course often arise on self builds by folks.. Trying to price such jobs is tricky.. and some folks gets politely asked to take their cars away with a list of things to fix first, or have the option of getting them fixed by me but that work is hourly rate chargeable.
Tricky one, the position you find yourself in.
An actuator only run often becomes of how I approach these things.... see what the base line is...as an issue on wg for example would be evident from he get go.
good luck getting it sorted..
Stonehouse is'nt that far from Bath