RMKD refresh times?

[Four Five Wayne]

I have recently bought a ZXR400 that has been tuned by RMKD about one year ago and has done around 60 laps since with an oil change after every meeting. Being pretty new to racing I was wondering how long until the engine will need refreshed in the opinion of the experienced racers on here? Also would you recommend an oil change after every meeting or is this quite excessive?

Details of the bike are below
RMKD tuned engine with Kent cams. 74bhp.

RMKD Race wiring loom running total loss. Brand new Yuasa battery fitted at last round .

Chipped ignitor box running raised rev limit.

RMKD ram air box complete with carbon fibre ram air snorkel that runs through a modified radiator.

RMKD carb bell mouths on modified carbs running 112 main jets and blocked off air corrector tubes.
Also if there is anything else people can recommend to keep on top of the engine please let me know.

Thanks in advance Wayne

[cargo]

No point in speaking to the monkeys when you can talk to the organ grinder himself



Roger............. 07809007881

[Four Five Wayne]

Thanks Cargo I appreciate the help, I will call the number and get an answer. Again thanks