rocker arms

i recently started tearing apart one of my g54b motors and found that someone had cut off the arms that extends to the jet valves. is this a good or bad thing?
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http://www.mightyram50.net/phpBB3/
http://www.mightyram50.net/phpBB3/viewtopic.php?f=105&t=2010
pennyman1 wrote:Also a way to stop the jet valves from opening, although its a cutoff wheel type of thing. x2 on being cheap about getting the right rockers - the head may have been changed to a non jet valve head and they used the original rockers from the jet head.