Leakdown Test | EJ205 on Engine Stand and replaced all Valves

I have my EJ205 out of my 2003 WRX. I pulled the engine in the first place to troubleshoot a 90% pressure loss in Cylinder 4 (measured via a leakdown test with the Engine still in the car). The remaining cylinders all had ~5% pressure loss. After removing the heads, I found that Cylinder 4 had a burnt out exhaust valve. I took this opportunity to replace:

• All intake/exhaust valves (lapped)
• All valve springs
• All valve stem seals
• Ordered new bucket cover (shims) to put all valves in spec
• New head gaskets on head install

After putting the heads back on, getting the timing belt together, and valve covers on, I decided to run a leak down test while the engine is out and before I do any further work.

Here are the results of the leak down test, each cylinder couldn’t exceed 75 psi. Using an endoscope, I put each cylinder to TDC for each test:

• Cylinder 1: leaks ~90% pressure loss from intake valves
• Cylinder 2: leaks ~25% pressure loss from both intake and exhaust valves
• Cylinder 3: leaks ~25% pressure loss from exhaust valves
• Cylinder 4: leaks ~25% pressure loss from exhaust valves

This is the second time I’ve done a valve job and I’m a bit alarmed. Did I mess things up that bad? Is excessive leaking on a new valve job (with engine outside of car/before first start up) expected?

My first guess might be the timing belt? After installing the timing belt and engaging the tensioner, I verified that all the timing marks lined up. Any other theories before I remove the heads again?

Edit: Verified timing belt is aligned correctly.