That is definitely worth a try.
Turn off the gas at the tank, and try to start it 2 or 3 times to purge gas from the lines.
There is a drain plug under the converter. It's a brass plug from memory, maybe 10mm.
Drain any crap from it.
There is the solenoid on top of the converter.
Undo the electrical plug, and the small bolt, sit it all aside.
There is a brass piece the solenoid attaches to that screws into the housing, maybe a 13 or 14 mm spanner required, and a pair of pointy nosed pliers.
Carefully remove the screw on piece, and the plunger and spring below it.
Be careful as this can fly apart as it is being disassembled.
Below this is a jet, which can be removed with a flat screwdriver.
Clean everything well with Carby cleaner, including spraying into where the jet screws in.
Reassemble, including the drain plug.
Open the tank valve, and cycle the key, but don't start.
Check for leaks with a mixture of dishwashing liquid and water squirted over the fittings etc. and cycle the key a couple more times.
If there are no leaks, go ahead and start.
If you are not confident, is probably better to get someone who is experienced with LPG