RF60 recycle times at full power lengthen quickly during use, relatively new flash
Hi, I have an RF60 that was purchased in early 2015. It hasn't been used extensively. Just recently, when shooting at full power (1/1), the recycle times seem to grow quickly with each successive flash (e.g., 4 seconds, 5 seconds, 10 seconds, 24 seconds, etc), but recycle times at 1/2 power are punchy and quick.
The tests I'm conducting are mainly just pressing the test button. Note that I recently updated the firmware on the RF60 to the latest version.
I find it hard to believe the flash tube would be going after such a short period of time. As a Fuji shooter, I'm eager to invest in more Cactus gear. I'm hoping this isn't a quality issue.
Can you help me troubleshoot?