I have been bothered with Idle Hammer (IH) on both my previous '06 Vstrom DL650 and my current '14 DL1000A. Especially my DL1000A. which I bought new in the fall of 2015, has been badly affected after the first 1000km (600 miles) service. I have been in contact with the local Norwegian Suzuki importer, and they have had the bike in for inspection with no result. The usual frase "This is normal" is what they offered. They, however, changed the clutch basket, showing that they don't understand the issue at all.
I have tested both known IH fixes on the market (Werks and the UK type), neither of them remove the IH. I also felt extremely uncomfortable driving around with these add-ons after a friend of mine got an engine break-down on his new Moto Guzzi Stelvio 1200NTX. My bike is still under warranty (5 years), and showing up at a Suzuki dealer with a wrecked engine with non-original parts attached to the crankshaft would probably void any warranty.
So, to the point. I read a posting from a greek guy on an SV forum (same engine as the Vstrom) where he adviced a special motor oil and a genuine OEM oil filter to get rid of the IH. Having tried most of different motor oils and viscosities, I gave this a shot. And guess what, it helped!
I will not say that the IH is compeletely gone, but it is reduced to a level where I don't care anymore. I would gladly disclose the oil brand and type here, but then I know from experience that the posting would be removed immediately.
But for those of you interested, send me a PM and I will tell