Sorry bud, years since I flew it but I think it had two 160hp donks. The fuel flow is about double that of maybe a 172 but I'm guessing. I don't recall ever adding any margin for the climb to be honest, Again it may only of been the one I flew but leaning at altitude the fuel flow gauges look like they are close to running in nothing just due to where the indications sit.
Another thing I thought of was the fuel transfer system as well, you have 6 tanks in total and the selectors are on the floor, poorly maintained these can be knocked out of place causing mild heart issues! Whenever you got a splutter the memory actions was down to the floor and switch both to mains straight away