Oh my, 185 views and no answer. But as I've tried the setup one way and then another way - I have a comparison and you can have a review
First of all I've created several "sophisticated" tools to cover for Honda tools needed for fork disassembly I'm extremely proud of the fork rod puller tool (MRSP 30$) made from bamboo Asian food stick
. Anyway I was once again quite disappointed with Honda assembly quality of this bike, that was really outstanding on my previous VT600, VTX1300 and VTX1800 bikes. I have a 2013 Crosstourer with 40k km always kept in a garage. And clearly there was oil with some water in one of the forks - hence corrosion inside. Had to clean it. I assume that it could get inside only during the assembly in the factory. Oil was really dirty, but that was expected.
Then I've changed oil for Motorex SAE15 and used recommended Hyperpro settings i.e. 125mm oil level and most importantly mounting fork 10mm through the clamp. Front suspension became stiffer and bike handling improved. Honestly, after 40k km fron suspension was extremely soft, so almost any change would have been an improvement.
BUT I wanted to reuse oil seals, which was a clear mistake. One of the oil seals was leaking. And as I had to disassemble the fork anyway, I decided to change the springs in both forks - so I ordered Hyperpro spring set. Springs are a bit longer approx 7mm and a bit stiffer. So after mounting springs I do have a subjective feeling of improvement, however I cannot say that it's significant and honestly I cannot say what % of improvement is caused by oil change and level and different fork position, and what % is caused by spring replacement.
But I guess Hyperpro wouldn't be so successful with selling only advice on suspension change and oil for 150 EUR. And yes, 1 liter of included Hyperpro oil is not enough, so keep some of the oil from the forks.
UPD: I see significant improvement in bike being lower - 10mm in the fork is enough to have my whole foot on the ground - which was previously impossible.
I know it's kind of a blasphemy, but I'm really thinking of purchasing KTM Duke 1290 next year. Starting to be disappointed with big X.