Hi all, new to the forum and hoping to find some support/expertise. I have a '74 Honda XL250 4-stroke that was running great about 3 years ago. I lost the ignition keys (don't ask) and haven't started it in about that time. I cleaned the carb, dumped the tank and put in new petrol, changed the spark plug and still can't get it to start. Now... there is spark... the battery seems ok - lights are working, horn etc. and there is spark. I get compression, I have spark, gas is getting into the carb... but it won't start! Is there anything obvious I'm missing? The air filter got a little wet from the rain, would this prevent ignition? I have compression. It's a kickstart, have had difficulty starting in the past but not like this. I'm in LA so no real weather concerns. Any advice or insight is very much appreciated. Thanks.