You'll have to excuse the big silly watermark, but people steal content from here and plagiarise it as their own elsewhere!

The HRC X and Y-pieces have different sizes, and there are also very small variations across the MC21 and MC28 years, but these are the most common dimensions. If you're making them yourself, and you're really fussy, you could make different sizes to really fine tune the air correction, but you'd need to be (a) really anal, or (b) really bored!
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Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

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