What happened was i was quoted to replace panels which the solar company selected.
Offer then accepted by myself.
Third party company then turned up to do the install. They told me the issues and fixes when they left.
Original company now saying I need to add more panels but that isn't efficient and will breach and negatively affect my payments during average weather but i cant benefit in full sun as limited. Other option is single inverter and rewire or leave as is with 2 strings. I am going for them to install 2.5kw inverter, not sure about wiring.