The low-speed, high weight handling does leave a bit to be desired, but it is not surprising with the slightly odd aerodynamics and weight of a much larger aircraft when tanked to the limit.
Fly it like an early jet.. lift off, level off, gain speed then climb and/or turn. Until you are comfortable, I wouldn't try full tanks without a long runway in flat country. It's FUN!
On 27 February 1947, a P-82B 44-65168 named Betty Jo and flown by Colonel Robert E. Thacker made history when it flew nonstop from Hawaii to New York without refueling, a distance of 5,051 mi (8,129 km) in 14 hr 32 min (347.5 mph/559.2 km/h). This flight tested the P-82's range. The aircraft carried a full internal fuel tank of 576 gal (2,180 l), augmented by four 310 gal (1,173 l) tanks for a total of 1,816 gal (6,874 l). Also, Colonel Thacker forgot to drop three of his external tanks when their fuel was expended, landing with them in New York
(Thanks OBIO... it's good to be around.. and of course the RTWR is soon upon us!)
R