My XL250 has an exhaust leak where the muffler meets the header. Evidently there's supposed to be a gasket there:
![](http://www.advrider.com/forums/attachment.php?attachmentid=316048&stc=1&d=1396974818)
These are NLA and the one that has shown up on ebay in the past month is $30, and we can't afford that for our $500 Challenge bike. Here's a pic of it though:
![](http://www.davidsilverspares.co.uk/graphics/parts/18391290306_large.jpg)
Any ideas of what we can use here? My Goldwing has a crossover between the pipes that uses a similar gasket but it's the wrong size. What do you think it's made out of? Our current plan is to shim it with a couple of layers of beer can aluminum; not sure if that'll do it though.