This is a very common experience for many and there are two very common fixes for this...
1. You can purchase a GSO low profile focuser (approx. $129) from BinTel or Andrews. Only takes 4 screws to attach. Once you have the low profile focuser, you may need an extension tube for your eyepieces when doing visual observing.
2. Move the primary mirror up the tube by about 1 inch or so. More members here will give you details on how to do this.
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