hello jazzdoc and welcome to the forums!
i am puzzled by your post because of 2 things. actually make that 3 things
1. the ghs black nylons doesnt have any thinner string than 050. not in a kit, not as a single. the tension would be pritty hard if you tune a 5 string set up to eadgc instead of beadg
2. i have a set of them on my 20th sr5. i took the liberty of measuring the distance from the bridge entry point to the centre of the d tuner which was 42,9"
i then loosened the g string and pulled it in a straight line past the d tuner. even if i trimmed the string to make the string fit the g tuner i still had a good inch past the d tuner. without the trimming it should be plenty to have a secure fit into the tuner
3. the ghs actually are 37 1/4" from the ball end to the start of the red silk. then add all the string with the silkwrap around. they usually add plenty of string length wrapped in that cloth to make sure it reaches where it should.
have you actually put the strings on, or do you perhaps just wonder if they will fit?
or, perhaps you are just trolling us?
if you are not trolling, perhaps just unsure i apologize. i did not mean to offend you in any way. i was just wondering
labellas can be had in 38" length from ball end to the silk spinning and also in 043 which would be suitable for the high c tuning. give labella a call to hear the total length of the string before you order them
hth!
MrM