I have a 2008, more or less the same, but with larger fuel tank. Yes there are a few week points and if you address them before they cause major damage, then it will be reliable. But can add up quickly and may be hard to justify for an older bike, although some of this may already by done.
In no particular order
- Cam bearing. If not done, need to be replaced with a high quality bearing. Consider if you want to do came change at the same time
- Lifters. Ongoing problem. S&S standard lifters are a great replacement. While the stock lifters are not great, some of the blame lies in valves brings being to heavy and the quick ramps of the stock SE255.
- Valve guides. Been a few few instances of guides dropping. Consider doing along with replacing valve springs and to be honest just have the heads done overall
- Crank run-out. Issues with high run-outs. Harley increased the specs a few years ago to something like 0.012". Personally anything over 0.005" should be addressed.
- Exhaust and Tuner. These bikes run-out from the factory to meet emissions. A fuel dyno with a proper dyno will address this.
so, if the crank run-out is OK, then re-freshing the heads with adding a little compression, a new cam + bearing, lifters, fuel tuner and exhaust will not only wake the bike up, but improve it's reliability.