Throttle bodies dont relearn. Ypu do have to be careful not to drop the fixing bolts and to observe torque settings, The TB is only a lttle more than finger tight. Have a magnet about to secure the bolts,. Ive done our Panda TBs more than twice adn all its done is made things better. I just sprayed carb cleaner until clean and wiped with clean cotton cloth. If you remove with care the gasket which is a thickish neoprene thing seems quite happy to reseal. I do stress dont obver tighten as it would crush the gasket and probably make it u/s. The fiddliest bit is disconnecting wire and pipe clips. The buttfly doesnt open unless the engine is running but you can open it with a lever. Its a little stiff for fingers. Just go steady.
