The Veek uses a special spark plug, standard ngk will not fit. My plugs where £21 each from Suzuki dealer. All the parts in total ie plugs, air and oil filter, oil, coolant were 150 quid ( castrol semi syn oil used )
My valve clearances where all in spec but only just on two, rest perfect.
Throttle bodies where not balanced, I can see the vacuum points and adjustment screws but grey wolf says you need a special Suzuki tool to do it. Bike going OK so left it.
Its not a difficult bike to do just a bit time consuming as its like working on two engines.