let me know if there is something needs to change vs let me know if there is something needs to be changed

Some examples from the web:

• If there is something just let me know.
• If there is something else let me know.
• If there is something the Commission does not know about, I would be grateful if you could let me know.
• Let me know if there's anyone I need to be worried about.
• l don't know if there is something...
• Do not know if there is something wrong with you.
• That right there is something that we need to change.
• If there is something, we need to report on it.
• If there is something that I need to know,
• But if there is something else going on, you need to tell me.
• You let me know if there's any bloodshed.
• Let me know if there is anything I can do.
• Let me know if there are any developments in your case.
• Jen, let me know if there's any sightings of Farrow.
• Let me know if there's a problem.
• Let me know if there's any hits.
• Let me know if you need to stop.
• If there is something real going on between you and colonel sheppard that you feel you need to address you definitely should.
• And... if there is something real between you and me... I need to sort things out with Jacob.
• If there is something that I need to know, I expect you to share it.

Some examples from the web:

• If there is something just let me know.
• If there is something else let me know.
• If there is something the Commission does not know about, I would be grateful if you could let me know.
• Let me know if there's anyone I need to be worried about.
• l don't know if there is something...
• Do not know if there is something wrong with you.
• If there is something, we need to report on it.
• If there is something that I need to know,
• But if there is something else going on, you need to tell me.
• You let me know if there's any bloodshed.
• Let me know if there is anything I can do.
• Let me know if there are any developments in your case.
• Jen, let me know if there's any sightings of Farrow.
• Let me know if there's a problem.
• Let me know if there's any hits.
• Let me know if you need to stop.
• If there is something real going on between you and colonel sheppard that you feel you need to address you definitely should.
• And... if there is something real between you and me... I need to sort things out with Jacob.
• If there is something that I need to know, I expect you to share it.
• If there is something wrong, you need to share it with your family.