82 LG4 getting code 21, meaning tps is reading high. is it safe to say its bad or try adjusting it? im sure in 31 years its been un touched... how hard is it to replace, have to remove the top of the carb?

also im getting code 41 which is this...

"Trouble Code 41 indicates that the Camshaft Sensor is not functioning properly.

The ignition module uses the Cam Sensor signal for timing the spark firing. The ignition module also passes this signal to the ECM to enable sequential fuel injection. The inability to properly determine engine position from the Cam Sensor will generate Code 41.

The engine will continue to run if the signal is lost from the sensor, however it will not restart after shut down. If the Cam signal from the ignition module to the ECM is lost while running, the ECM will switch to the simultaneous fuel injection mode. The engine can be re-started but will continue to run in the simultaneous mode as long as the fault is present"

i dont get that one as it seems to run great other than a lil rich do to tps, any help is greatly appreciated.... i also got that code last night then cleared codes and it came back.

 

i also didnt think these old engines had anything like a camshaft sensor