Hi, anyone have an idea how can I get a set of grommets for my head tgt 307.1 18 by 20 string pattern? The new retail line of head radicals don't offer an 18 by 20 string pattern just 16 by 19, so most likely I won't be able to get a set of original grommets. My question is: Could I fit a grommet from an older radical with 18 by 20 string pattern to my tgt 307.1? Thank you.