Hi all,i'm new around here and had a quick question.I've looked all over the web and could'nt find much about McCulloch gas weed trimmers.I was given one thats probably about 10 years old and i'd thought i'd tinker with it.I don't have the model number handy.I was going to remove the filter cover to get to the carb. and it appears to have a unique screw that i've never seen before,not quite a phillips head or allen wrench,does anybody happen to know if i need a special tool to remove them?I can try to post a pic if that would help.Also i was told that McCulloch was out of business,is that true?Just curious.Thank you all for your time and help !