the Bonanza A36TC Profile needs to be checked because the fuel weight in the profile is to low. It was set to 625lbs and with the equiped tip tanks it needs to be at 662lbs.
Standard weight with no Tip Tanks is 480lbs and with Tiptanks you’ve the 662lbs.
Also the cruise settings should be reviewd because the books says others then set in the profile.
The original book by Blacksquare could be found here
625 lbs is the useable fuel weight, straight from the manual you linked. The weight of the unusable fuel is instead included in the aircraft empty weight.
SimBrief’s cruise settings are correct for the A36TC, as per the real POH. I can’t comment on where Black Square got their settings from, you might want to ask them directly.
The SimBrief settings indicate the RPM and manifold pressure. So 2400/31.0 means cruise at 2400 RPM and 31.0 IN.HG of manifold pressure.