I called and asked, and if loosened, the rail can come apart in halves, so I can then easily deal with the O-ring replacement by loosening everything and removing just one half.
I might dive into that tonight. I've never messed with FI and fuel rails (just carbs)so this will be new territory for me, but it's all old, basic stuff, not beyond me mechanically, at least to take apart lol!
Hopefully the O-rings on the injectors hold up, or I'll be replacing those too.
Viton has always been the "better schoice" when I had the option. I'll go with Viton replacement O-rings if I can find them, once I get the offending ones out.
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